Mk4 escort misfiring

Russ Part of things Posts: 372	Mk4 escort misfiring Russ @mk1turbo
	Nov 22, 2009 22:08:02 GMT Select Post Deselect Post Link to Post Back to Top
	I've got a '90 mk4 escort 1.3 (HCS engine) and recently everytime i fill up with petrol, it starts back up fine but when i drive of it misfires and loses power and it'll do this 2 or 3 times. Sometimes it gives a slight misfire afterwards when driving about but it always misfire and loses power badly straight after filling up. It's had new plugs, leads, air filter etc and it's still doing it. Anyone know what might be wrong?


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petetong Part of things Posts: 736	Mk4 escort misfiring petetong @petetong
	Nov 22, 2009 22:46:40 GMT Select Post Deselect Post Link to Post Back to Top
	when it does this try stopping and opening the filler cap.. if there's a big rush of air when you do open it.. its vacum locking the fuel tank! the breather to the tank is blocked.. mk 3 and 4s use to do that... the other way to try it is to drive it with the cap of!! (just don't corner to hard!) if it don't do it again.. then same thing.. breather blocked..


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